Whistle



Oct. 6, 193.1., A. w. GRoNQulsT WHISTLE Filed Nov. 24, 1950 PatentedOct. 6, 1931 UNTED TES i ALBIN W. GRONQUST, OF BRANERB, MEINE GNSBURG,BRAINERBi MLNNEEGTA;

WHSTLE Application filed November 25;, Scial No. 437,679.;

This invention relates to Whistles, particularly, although notexclusively, adapted for use in the air lines of railway trains.

It is my object to provide an inexpensive and unusually strong anddurable Whistle oi this kind whereby the original cost and eX- penses ofup-keep and installation are reduced.

The invention will be best understood by reference to the accompanyingdrawings in which Figure l is a side elevation of my improved Whistle,partially in central vertical section; Fig. 2 is a central longitudinalsection through the same taken at right angles to the section portionshown in Fig'. l and Fig. 8 is a detail plan view of the head 'forconnecting the valve steam to the bell or sound producing element.

My device has tubular body portion d formed with a threaded nipple 5adapted to be secured in a suitable fitting or tapped hole in a.compressed air line or in any other source of fluid under pressure. Thisbody port-ion has a nut 6 ,integral therewith to facilitate securing thedevice to the support. n end 7 of the body l is adapted to communicatewith the source oit fluid and is termed with a conical seat for aclosure 8. This closure is secured to a valve stem 9.; which extendsai;-

ially through the tubular body 4 and projects into a coaXially disposedsound producing elementor bell l0. The bell l() has a sleeve portionwhichr slidably tits the body 4 and encloses a coiled spring ll fornormally holding the valve in closed position. @ne ond of the spring 1lrests on an internal shoulder in the body 4 and its other end abutsagainst a. head l2 which has an axial opening to receive an end oi thestem 9. A transverse bore in the bell l0.y head l2 and stem 9 isprovided for afconnecting` pin 13 fitting;l snugly Within said bore. Apassage lll through the head 12 is formed by cutting away the peripheryot said head in such position as to direct compressed air or other fluidagainst an edge or lip l5 termed at one side of an oblique slot in thebell lO constituting the outlet mouth for fluid.

The spring ll is held under compression between the head l2 and shoulderin the body so` that,l in order' operate the' Whistle, the bell l0 isactuated toY compress the spring; and' remove theic'los-ure 8 'lirontits scat in tlfie body and' bell l()L allow the tree How O the i i fluidunder' compression to the passage:

when the' valve is ope-ned.

My device constructed iiorn a small num rlie stem Qi is spaced 'lirenrtire bodyl ber 'i rugged parts and is rendered unusunl- ,s

l'y durable by my arrangement et thie sla rt valve stem 9 connected! toxthe lloaver' portion; of` the bell 1which isI guided' by` its' smooths,`cylindrical l-)earin-g'v on the body Ll, said bei' ring` beingl` otamp-le length to prevenzaccidental' bending ol' the: body portion. andbell ont of alignment'.` It will be 'iurther noted that the lie adpertormsthe;double function of connecting the valve stem with the soundproducing bell and directing the blast of air against the lip l5 o' thebell. The bell may also be employed as an actuating member which ismanipulated to open the valve and may be constructed from a shortsection of standard pipe, preferably closed at one end.

Having described my invention What I claim as new and desire t-o protectby Letters Patent is:

l. A Whistle having' in combination a hollow body adapted to be placedin communication with a source ot fluid under pressure, a bell slidablyengaging; said body along'l a telescoping portion of the same,'said bellbeing formed with a sound producing lip, a valve closure having a seatin said body and means Jfor operatively connecting' said bell andclosure and for normally retaining said closure on its seat comprising avalve stem and a coiled spring' confined on said stem Within thetelescoping` portions ot said bell and body.

2. A Whistle having in combination a hollow body adapted to be placed incommunication with a source ot fluid under pressure and formed with avalve seat, a valve closure adapted to engage said seat, a valve stemWithin said body and connected to said closure, a sound producingelement mounted in continuation of said body and havingv an interioropening' in communication With the interior of said body, a head on saidstem engaging 'gan the interior of said element, ai spring con-Y linedWithin said body and element and arranged to engage said head tonormally retain said closure 1n engagement With said seat, a lip formedon said element and a pas-- sage formed in said hea-d to direct fluidagainst said lip.

3. A whistle havingin combinati-on a tubular body adapted to be securedto a support, said body having an end opening adapted to be placed incommunication with a source of fluid under pressure and being formedwith a valve seat adjacent to said opening, a bell closed at one end andhaving a sleeve portion at its other end slidably engaging said body, avalve closure arranged to engage said seat,

a valve stem extendingv longitudinally in said body and sleeve portionand connected to said closure at one end, a head on the other end ofsaid valve stem, means rigidly conn necting said head and stem to saidbell, a spring confined Within said sleeve portion and body and engagingsaid head to normally hold said valve in closed position, said bellbeing formed with an outlet opening for fluid located in the side ofsaid bellL between said head and closed end and passages for fluid insaid body, sleeve portion and head for directing fluid to said outletopening.

In testimony whereof, I have hereunto signed my name to thisspecification.

ALBIN W. GRONQUIST.

